matron vs mom

matron

noun
  • A woman of staid or motherly manners. 

  • A mature or elderly woman. 

  • A wife or a widow, especially, one who has borne children. 

  • A housekeeper, especially, a woman who manages the domestic economy of a public institution. 

  • A senior female nurse in an establishment, especially a hospital or school. 

  • A female prison officer. 

mom

noun
  • Mother. 

  • An adult female owner of a pet. 

verb
  • To care for in a motherly way. 

How often have the words matron and mom occurred in a corpus of books? (source: Google Ngram Viewer )